/**
* 构造方法
*
* @param array $options associative array of options
* @throws RThink_Controller_Exception
* @return void
*/
public function __construct(array $options = array())
{
if (!extension_loaded('memcached')) {
class_exists('RThink_Controller_Exception', false) || (require 'RThink/Controller/Exception.php');
throw new RThink_Controller_Exception('memcached扩展没有加载！');
}
// override default client options
$this->_options['client'] = array(Memcached::OPT_DISTRIBUTION => Memcached::DISTRIBUTION_CONSISTENT, Memcached::OPT_HASH => Memcached::HASH_MD5, Memcached::OPT_LIBKETAMA_COMPATIBLE => true);
parent::__construct($options);
if (isset($this->_options['servers'])) {
$value = $this->_options['servers'];
if (isset($value['host'])) {
// in this case, $value seems to be a simple associative array (one server only)
$value = array(0 => $value);
// let's transform it into a classical array of associative arrays
}
$this->setOption('servers', $value);
}
$this->_memcache = new Memcached();
// 配置memcached客户端操作项
foreach ($this->_options['client'] as $name => $value) {
$optId = null;
if (is_int($name)) {
$optId = $name;
} else {
$optConst = 'Memcached::OPT_' . strtoupper($name);
if (defined($optConst)) {
$optId = constant($optConst);
} else {
$this->_log("Unknown memcached client option '{$name}' ({$optConst})");
}
}
if ($optId) {
if (!$this->_memcache->setOption($optId, $value)) {
$this->_log("Setting memcached client option '{$optId}' failed");
}
}
}
// 配置memcached服务
$servers = array();
foreach ($this->_options['servers'] as $server) {
if (!array_key_exists('port', $server)) {
$server['port'] = self::DEFAULT_PORT;
}
if (!array_key_exists('weight', $server)) {
$server['weight'] = self::DEFAULT_WEIGHT;
}
$servers[] = array($server['host'], $server['port'], $server['weight']);
}
$this->_memcache->addServers($servers);
}
/**
* 构造方法
*
* @param array $options associative array of options
* @throws RThink_Controller_Exception
* @return void
*/
public function __construct(array $options = array())
{
if (!extension_loaded('memcache')) {
class_exists('RThink_Controller_Exception', false) || (require 'RThink/Controller/Exception.php');
throw new RThink_Controller_Exception('memcache扩展没有加载！');
}
parent::__construct($options);
$this->_memcache = new Memcache();
//处理单台mecache服务器的参数的情况
if (isset($this->_options['servers'])) {
$value = $this->_options['servers'];
if (isset($value['host'])) {
//单台服务器的情况
$value = array(0 => $value);
// 构造memcache适配器需要的参数格式
}
$this->setOption('servers', $value);
}
foreach ($this->_options['servers'] as $server) {
array_key_exists('port', $server) || ($server['port'] = self::DEFAULT_PORT);
array_key_exists('persistent', $server) || ($server['persistent'] = self::DEFAULT_PERSISTENT);
array_key_exists('weight', $server) || ($server['weight'] = self::DEFAULT_WEIGHT);
array_key_exists('timeout', $server) || ($server['timeout'] = self::DEFAULT_TIMEOUT);
array_key_exists('retry_interval', $server) || ($server['retry_interval'] = self::DEFAULT_RETRY_INTERVAL);
array_key_exists('status', $server) || ($server['status'] = self::DEFAULT_STATUS);
array_key_exists('failure_callback', $server) || ($server['failure_callback'] = self::DEFAULT_FAILURE_CALLBACK);
if ($this->_options['compatibility']) {
$this->_memcache->addServer($server['host'], $server['port'], $server['persistent'], $server['weight'], $server['timeout'], $server['retry_interval']);
} else {
$this->_memcache->addServer($server['host'], $server['port'], $server['persistent'], $server['weight'], $server['timeout'], $server['retry_interval'], $server['status'], $server['failure_callback']);
}
}
}
